Make the relevant materials (Tongue, InnerMouth, Teeth, Gums) completely transparent and matt
i.e. Transparency = 1.0, Transparency_Edge = 1.0, Transparency_Falloff = 0.0, Specular_Color = black, Specular_Value = 0.0, and Ambient_Value = 0.0

If your not using head morphs you could create a modified OBJ file, but it shouldn't be necessary.

Edited to add:
If your using the P6 figures, you may need to use B/W maps to control Transparency / Specular / Ambient due to them having fewer material zones.

Message edited on: 01/28/2006 07:36